Coix seed oil containing 11 triglycerides, and pharmaceutical preparation and use thereof

ABSTRACT

The present invention relates to  Coix  seed oil extracted from  Semen Coicis , pharmaceutical preparations thereof, and the use thereof in the treatment of tumors. Specifically, the  Coix  seed oil contains 11 triglyceride ingredients in the following mass percentages: trilinolein 4.87-6.99%, 1-olein-2,3-dilinolein 13.00-18.69%, 1-palmitin-2,3-dilinolein 5.25-7.54%, 1,3-diolein-2-linolein 13.23-19.02%, 1-palmitin-2-linolein-3-olein 10.26-14.75%, 1,3-dipalmitin-2-linolein 2.28-3.28%, triolein 14.44-20.76% and 1-palmitin-2,3-diolein 8.06-11.58%, 1-olein-2-linolein-3-stearin 1.37-1.97%, 1,3-dipalmitin-2-olein 1.52-2.19% and 1,2-diolein-3-stearin 1.29-1.86%.

CROSS REFERENCE TO RELATED PATENT APPLICATION

The present application is the US national stage of PCT/CN2015/084297 filed on Jul. 17, 2015, which claims the priority of the Chinese patent application No. 201410343083.4 filed on Jul. 18, 2014, which applications are incorporated herein by reference.

FIELD OF THE INVENTION

The present invention relates to the pharmaceutical field, specifically, the present invention relates to Coix seed oil, pharmaceutical preparations thereof, the process for the preparation of same and the use thereof in the preparation of antitumor drugs.

BACKGROUND OF THE INVENTION

Coix seeds are dried ripe seeds of Coix lacryma-jobi L. var ma-yuen (Roman.), Stapf, a genus of plant in the Poaceae family. It is a dampness-eliminating drug and has been used as a medicinal and edible plant for a long time. Modern researches have found that Coix seeds have many pharmacological effects, such as analgesic anti-inflammatory, immunomodulatory, anti-ulcer, hypolipidemic and anti-obesity effects. In recent years, researchers around the world have studied the chemical composition of the Coix seed by using TLC, HPLC-MS, GC, etc., and found a variety of active ingredients in it, including coixenolide, triglycerides, fatty acids, lactams, coix lactones, saccharides, sterols and triterpenoids. Among them, esters are the first discovered components having anti-tumor activities and the most reported chemical composition attracting the most attention. Kanglaite injection, in which the active ingredient is Coix seed oil, has been widely used in present Chinese clinical applications, but the Coix seed oil used in the Kanglaite injection comprises complex components. In addition to triglycerides, it also contains monoglycerides, diglycerides and fatty acid esters, etc. This will inevitably be a great challenge for the quality control in the practical production process and the safety in clinical applications.

In the present invention, the raw material Coix seed powder has been treated by supercritical carbon dioxide extraction, basification, neutral alumina purification and kaolin purification, etc., to afford an effective part, Coix seed oil. With the active ingredients' isolation and identification, it is determined that the Coix seed oil comprises mainly 11 triglyceride components. Further determination of its physicochemical constants has confirmed the optimal acid value, iodine value, saponification value, refractive index and specific gravity, etc. The use of the Coix seed oil of the invention in medication has advantages such as the confirmed composition of ingredients, ensuring quality stability in every batch in the industrial production, and avoiding toxic and side effects brought about by the complex ingredients while adopting coix seed oil directly.

SUMMARY OF THE INVENTION

The first aspect of the invention is to provide a Coix seed oil extracted from Semen Coicis. The Coix seed oil contains 11 triglyceride ingredients in the following mass percentages: trilinolein 4.87-6.99%, 1-olein-2,3-dilinolein 13.00-18.69%, 1-palmitin-2,3-dilinolein 5.25-7.54%, 1,3-diolein-2-linolein 13.23-19.02%, 1-palmitin-2-linolein-3-olein 10.26-14.75%, 1,3-dipalmitin-2-linolein 2.28-3.28%, triolein 14.44-20.76%, 1-palmitin-2,3-diolein 8.06-11.58%, 1-olein-2-linolein-3-stearin 1.37-1.97%, 1,3-dipalmitin-2-olein 1.52-2.19% and 1,2-diolein-3-stearin 1.29-1.86%.

Preferably, mass percentage contents of the above 11 triglyceride ingredients are: trilinolein 5.47-6.69%, 1-olein-2,3-dilinolein 14.63-17.88%, 1-palmitin-2,3-dilinolein 5.90-7.21%, 1,3-diolein-2-linolein 14.88-18.19%, 1-palmitin-2-linolein-3-olein 11.55-14.11%, 1,3-dipalmitin-2-linolein 2.57-3.14%, triolein 16.25-19.86%, 1-palmitin-2,3-diolein 9.07-11.08%, 1-olein-2-linolein-3-stearin 1.54-1.88%, 1,3-dipalmitin-2-olein 1.71-2.09% and 1,2-diolein-3-stearin 1.45-1.78%.

More preferably, mass percentage contents of the above 11 triglyceride ingredients are: trilinolein 5.96-6.20%, 1-olein-2,3-dilinolein 15.93-16.58%, 1-palmitin-2,3-dilinolein 6.43-6.69%, 1,3-diolein-2-linolein 16.20-16.87%, 1-palmitin-2-linolein-3-olein 12.57-13.09%, 1,3-dipalmitin-2-linolein 2.79-2.91%, triolein 17.69-18.42%, 1-palmitin-2,3-diolein 9.87-10.27%, 1-olein-2-linolein-3-stearin 1.68-1.74%, 1,3-dipalmitin-2-olein 1.86-1.94% and 1,2-diolein-3-stearin 1.58-1.65%.

The above contents refer to the mass percentage contents of triglyceride compounds in the Coix seed oil. 11 triglyceride monomer compounds can be separated by using preparative chromatography from the coix seed oil prepared by the following steps, and their contents can be obtained by weighing and calculating the products. They can also be obtained according to conventional analytic methods in the art.

The Coix seed oil has the following physicochemical constants based on the fatty oil detection: specific gravity at 20° C. 0.917-0.920, refractive index at 20° C. 1.471-1.474, acid value <0.2, iodine value 100-106, saponification value 188-195.

The Coix seed oil of the invention can be prepared by a process comprising steps of:

(1) Supercritical Carbon Dioxide Extraction:

Crushing Coix seeds into 20-60 mesh powder and extracting the powder using a supercritical CO₂ extraction system in which coix seed powder is put in an extractor; the CO₂ preheater, extractor and separation column are heated by jacketed circulating hot water to make the extraction temperature and separation temperature to be 33-45° C. and 30-45° C., respectively; the outlet temperatures of separator I and separator II are kept at 20-50° C. and 15-35° C., respectively; the liquid CO₂ is pressed at a flow rate of 2.5 kg/h·kg˜7.5 kg/h·kg (based on the mass of the coix seed powder) into the CO₂ preheater via a high pressure pump, turning into a fluid in supercritical state; in the extractor, an oil is extracted into the CO₂ fluid at a pressure of 19-23 Mpa; then the CO₂ fluid with this oil enters the separation column in which the pressure is controlled to 7-10 Mpa to separate this oil; the CO₂ gas out from the separation column enters sequentially into separator I and separator II in which the pressure is sustained at 5-7 Mpa and 4-6 Mpa, respectively; impurities such as water separated therefrom are discarded; the CO₂ gas returns to liquid CO₂ for reuse through a condenser; and a continuous extraction for 2-3 h affords a crude coix seed oil; and

(2) Refining Process:

adding 55% petroleum ether (bp. 60° C.-90° C.), based on the oil weight, into the crude coix seed oil obtained by the supercritical CO₂ extraction; adding 2% NaOH aqueous solution in an amount ranging from 36% to 56% of the oil weight according to the acid value; after stirring the mixture for 10 min and standing for 18-24 h, removing the lower niger layer; washing the upper layer with purified water and letting standing for 18-24 h; after the removal of the lower waste water, washing the upper layer again; after standing for another 40-50 h, removing the lower waste water; and demulsifying the upper layer with acetone in an amount of 70%-90% of the oil weight; after standing for 2-4 h, removing the lower waste acetone and adding 3% to 8% of activated neutral alumina by weight of crude oil in the upper oil layer; stirring the mixture for 30 min, then filtering off the precipitation; heating the filtrate and adding 2% to 6% of activated kaolin by weight of crude oil; stirring the mixture for 30 min at 40-50° C. and then filtering off the precipitation; concentrating the filtrate under a reduced pressure to recover the solvent, then washing again with purified water; after standing for 1-2 h, removing the lower waste water and heating the upper oil layer and vacuum drying it in nitrogen atmosphere; then adding 8 to 12% activated neutral alumina by weight of crude oil and stirring the mixture and allowing to stand at a cold place; after filtrating, sterilizing the filtrated oil via dry heating under vacuum at 160-170° C. for 1-2 h; after cooling, filtering the oil through a 0.2 μm microporous membrane; then split charging the obtained Coix seed oil in 500 mL glass infusion bottles and sealing the bottles.

Preferably, the refining process comprises steps of:

adding 55% petroleum ether (bp. 60° C.-90° C.), based on the oil weight, into the crude coix seed oil obtained by the supercritical CO₂ extraction; adding 2% NaOH aqueous solution in an amount ranging from 36% to 56% of the oil weight according to the acid value; after stirring the mixture for 10 min and standing for 20 h, removing the lower niger layer; washing the upper layer with purified water and letting standing for 22 h; after the removal of the lower waste water, washing the upper layer again; after standing for another 46 h, removing the lower waste water; demulsifying the upper layer with acetone in an amount of 70%-90% by weight of the crude oil and standing for 3 h; removing the lower waste acetone and adding 5% of activated neutral alumina by weight of crude oil in the upper oil layer; stirring the mixture for 30 min, then filtering off the precipitation; heating the filtrate, and adding 4% of activated kaolin by weight of crude oil; stirring the mixture for 30 min at 40-50° C., and then filtering off the precipitation; concentrating the filtrate under a reduced pressure to recover the solvent, then washing again with purified water; after standing for 1 h, removing the lower waste water; heating the upper oil layer and vacuum drying it in nitrogen atmosphere; then adding 10% activated neutral alumina, stirring the mixture and allowing to stand at a cold place; after filtration, sterilizing the filtrated oil by dry heating under vacuum at 160-170° C. for 2 h; after cooling, filtering the oil through a 0.2 μm microporous membrane; then split charging the obtained Coix seed oil in 500 mL glass infusion bottles and sealing the bottles.

The Coix seed oil of the invention is a yellowish clear liquid with a light odor and a light taste. It is highly soluble in petroleum ether or chloroform, freely soluble in acetone, slightly soluble in ethanol, but insoluble in water.

The Coix seed oil prepared based on the above methods was detected according to the method in the appendix of “Pharmacopoeia of the People's Republic of China” (2010 Edition) Volume I. Physicochemical constants thereof are: specific gravity at 20° C. 0.917-0.920, refractive index at 20° C. 1.471-1.474, acid value <0.2, iodine value 100-106, saponification value 188-195. The acid value according to the Pharmacopoeia refers to the weight of potassium hydroxide (in milligrams) needed to neutralize free fatty acids contained in 1 gram of fats, fatty oils, or other similar substances. In the quality study of oil products, acid value is an important evaluation. As far as the Coix seed oil of the invention, the acid value is less than 0.2. By the optimization of the preparation process such as supercritical extraction parameters and the purification process like basification, Coix seed oil was prepared with the following advantages: on the one hand, it has a very low content of free fatty acid impurities, which means a high product quality; on the other hand, it gathers a great amount of active ingredients of triglycerides in high purity, and the types of triglyceride ingredients therein are determinate, and the contents thereof are stable. In addition, other physicochemical constants, such as saponification value, iodine value, etc., measured between batches of samples, had a small range of variation. It further illustrates that the Coix seed oil of the invention has a stable quality and a safer clinical use. The preparation method of the invention gives a stable product with a high yield and a low cost. It is suitable for the industrial production in view of the safety and controllability.

The second aspect of the invention is to provide a pharmaceutical preparation containing Coix seed oil, specifically, it comprises a therapeutically effective amount of the Coix seed oil of the invention and one or more pharmaceutically acceptable carriers.

Pharmaceutically acceptable carriers can be selected from pharmaceutical conventional dilutions, excipients, fillers, emulsifiers, binders, lubricants, absorption accelerators, surfactants, disintegrants, lubricants and antioxidants, if necessary, flavoring agents, sweeteners, preservative and/or coloring agents.

Pharmaceutically acceptable carriers can be selected from one or more in the group consisting of: mannitol, sorbitol, sodium metabisulfite, sodium bisulfate, sodium thiosulfate, cysteine hydrochloride, thioglycolic acid, methionine, soybean lecithin, vitamin C, vitamin E, EDTA disodium, EDTA calcium sodium, monovalent alkali metal carbonate, acetate, phosphate or its aqueous solution, hydrochloric acid, acetic acid, sulfuric acid, phosphoric acid, amino acids, sodium chloride, potassium chloride, sodium lactate, ethylparaben solution, benzoic acid, potassium sorbate, chlorhexidine acetate, xylitol, maltose, glucose, fructose, dextran, glycine, starch, sucrose, lactose, mannitol, silicic derivatives, cellulose and its derivatives, alginates, gelatin, polyvinyl pyrrolidone, glycerin, Tween 80, agar-agar, calcium carbonate, calcium bicarbonate, surfactants, polyethylene glycol, cyclodextrin, β-cyclodextrin, phospholipid material, kaolin, talc, and calcium stearate or magnesium stearate.

The pharmaceutical preparation of the invention can be oral solid preparations, oral liquid preparations or injections.

Preferably, the oral solid preparation is selected from any one of capsules, tablets, dripping pills, granules, and concentrated pills; the oral liquid preparation is selected from any one of aqueous or oily suspensions, solutions, emulsions, syrups or elixirs, and a dry product that may be reconstructed by water or other suitable carrier(s) before use; and the injection is selected from any one of nano suspensions, liposomes, emulsions, lyophilized powder for injection and aqueous injection.

More preferably, the injection comprises the following components: the Coix seed oil of the invention 50-350 g, soybean lecithin for injection or soybean lecithin acceptable for injection 10-40 g, glycerin for injection or glycerin acceptable for injection 15-50 g, and Water for injection added to 1000 mL.

The injection of the invention can be prepared by a method comprising steps of:

adding appropriate amount of water for injection to a formulated amount of soybean lecithin for injection or soybean lecithin acceptable for injection; dispersing the mixture with a high shear dispersing emulsifier to give a dispersion without bulks or granules; adding a formulated amount of glycerin for injection or glycerin acceptable for injection; then adding water for injection to a specified amount, and stirring the mixture to give a water phase;

weighing a formulated amount of Coix seed oil; heating the weighed oil and the water phase separately to 60-70° C., then mixing them and emulsifying the mixture in a high pressure homogenizer, in which the low pressure is 5-12 MPa and the high pressure is 25-50 MPa; repeating the cycle of homogenization for 3-6 times until the amount of particles below 2 μm is no less than 95% and particles above 5 μm are undetectable; if necessary, using NaOH or HCl to adjust the pH to 4.8 to 8.5, preferably 6.8 to 7.0, most preferably 6.8; and

filtering the resulting homogeneous emulsion by nitrogen pressure through a microporous filter of 3 μm or less; filling the emulsion, nitrogenizing, sterilizing and cooling to afford the injection.

The capsule of the invention comprises the following components: Coix seed oil 200-800 g, antioxidant(s) and/or emulsifier(s) 0.20-0.60 g for 1000 capsules.

The capsule of the invention can be prepared by a method comprising steps of:

preparing glue solution: weighing gelatin, purified water, glycerin and a preservative at a weight ratio of 1:0.6-1.2:0.3-0.8:0.0001-0.01; adding glycerin, purified water and preservative (selected from any one of 10% ethylparaben solution, benoic acid, potassium sorbate and chlorhexidine acetate) sequentially into a glue melting tank; heating to 70° C.-90° C.; then adding gelatin and constantly stirring the mixture under vacuum until the gelatin is completely dissolved; filtering the glue solution and storing the filtered glue solution at 56-62° C. for use;

preparing drug liquid: adding formulated amount of Coix seed oil, antioxidant (Vitamin E) and/or emulsifier (Tween 80) into an dosing tank, and stirring the mixture constantly until being homogeneously mixed; and

pressing capsules: choosing proper pellet dies according to the capsule size; pressing capsules in a temperature of 15-30° C. and a relative humidity of less than 35%; drying the pressed and shaped capsules; after removing capsules of abnormal size, washing the normal capsules with 95% medicinal ethanol, and drying them continuously till the moisture content is less than 12%; visually inspecting and removing unqualified capsules; finally printing and packaging to afford the capsules.

It is demonstrated, in pharmacodynamic experiments, that the Coix seed oil of the invention and the pharmaceutical preparation thereof have shown different degrees of inhibition on a variety of human tumor cell lines. They can be used as antitumor drugs.

Therefore, another aspect of the invention is to provide a use of Coix seed oil of the invention in the preparation of antitumor drugs.

The tumors refer to lung cancer, liver cancer, pancreatic cancer, prostate cancer, ovarian cancer and breast cancer, in early, middle or late stage.

The following experimental data are used to illustrate anti-tumor effects of the Coix seed oil of the invention and the pharmaceutical preparations thereof.

I. Inhibition of Coix Seed Oil and Preparations Thereof on 8 Human Tumor Cell Lines in MTT Method In Vitro

A. Experimental Materials and the Preparation Thereof:

(1) Cell lines: PANC-1 (human pancreatic cancer cells), SKOV3 (human ovarian cancer cells), MCF-7 (human breast cancer cells), Bcap-37 (human breast cancer cells), SMMC-7721 (human hepatic cancer cells), HepG-2 (human hepatic cancer cells), A549 (human lung cancer cells) and H460 (human lung cancer cells), storaged and passaged maintainably in Research and Evaluation Center for Pharmacology, Shanghai Institute of Pharmaceutical Industry;

(2) DMEM complete medium supplied with 10% newborn calf serum (GIBCO BRL), 1% of penicillin (100 U/mL)+streptomycin (100 μg/mL);

(3) 0.25% trypsin solution, purchased from Invitrogen Corp. and storaged at −20° C.;

(4) Phosphate buffer (PBS): NaCl 8 g, KCl 0.2 g, Na₂HPO₄1.15 g and KH₂PO₄ 0.2 g, dissolved in 1 L double-distilled water and autoclaved at 121° C. for 20 min, then storaged at 4° C.;

(5) MTT (AMRESCO) solution: 5 mg/ml in PBS;

(6) Formazan crystal dissolving solution: SDS 10 g, isobutanol 5 ml and concentrated hydrochloric acid 0.1 ml, dissolved in 100 ml of deionized double distilled water.

B. Experimental Method

The inhibition effects of samples on the above-mentioned cell lines were detected by using MTT method. The specific procedures were as follows:

(1) Cell culture: (a) Storaged cells were taken out from the liquid nitrogen, thawed quickly in a 37° C. water bath, and aseptically transferred into 6 ml of cellular medium in a 10 ml centrifugal tube, centrifuged at 1000 rpm for 5 min. The supernatant was discarded, then the precipitated cells were re-suspensed in 5-6 ml cellular media by pipetting and transferred into a flask in a 37° C. incubator for cell culture; (b) Next day, the flask was taken out from the incubator and the used medium was discarded, then the cells were incubated in 5-6 ml fresh medium in the 37° C. incubator; (c) On the third day, the flask was taken out from the incubator and the used medium was discarded, then 2-3 ml of PBS (pH7.4) was added into the flask with rocking for cleaning it and the used PBS was discarded. Such a cellular cleaning step was repeated once again. 3-5 drops of 0.25% trypsin solution were added into the flask with sloshing, thus well-distributed in it. The flask was capped and placed in a 37° C. incubator for about 3 min, and the separation of cells from the flask wall was observed under the microscope. 2 ml of cellular medium was added and cells were separated completely from the flask wall by pipetting, then the cell suspension was transferred into 2 separate clean flasks, each containing 5-6 ml medium. The cell suspension was well-distributed by pipetting, then the flask was placed in a 37° C. incubator. (d) Step (c) was repeated every other day. In the whole cultivation process, adherent cells were not allowed to grow too dense and suspension cells were always maintained at a logarithmic growth stage.

(2) Preparation of the sample and the control: A proper amount of sample of Coix seed oil (oil of Job's tears seed) was dissolved in DMSO to obtain a solution in a concentration of 10 mg/ml. This solution was diluted in a gradient dilution with PBS to obtain a set of sample solutions in the concentration of 10 mg/ml, 5000 μg/ml, 2500 μg/ml, 1250 μg/ml, 625 μg/ml and 312.5 μg/ml, respectively.

(3) Each diluted sample solution was added into duplicated wells of a 96 well flat-bottom microplate (10 μl/well). The correspondingly diluted DMSO solutions, as controls, were added into the wells of the microplate.

(4) Cells in a logarithmic growth stage were trypsinized and washed, then re-suspended in the medium containing 10% calf serum. The number of living cells was counted in Trypan blue dye exclusion method and cell suspensions were adjusted into a density of 2×10⁵ cell/ml.

(5) The cell-contained 96 well flat-bottom microplate was placed in a 37° C. incubator and cells were incubated under 5% CO₂ for 48 h.

(6) 20 μl of 5 mg/ml MTT solution was added into each well and cells were incubated continuously in the incubator for 3-4 h.

(7) 100 μl of crystal dissolving solution was added into each well and cells were incubated continuously in the incubator overnight, so as to dissolve the resulted formazan crystals sufficiently. Then, the absorbance value was measured at 570 nm for each well.

(8) Based on absorbance values, inhibition rates on the cell growth were calculated for sample groups of various concentrations. The calculation formula was as follows: (1−mean absorbance of experimental wells/mean absorbance of control wells)×100% C. Experimental Results

TABLE 1 Inhibition rates of samples in various concentrations on the cell growth in 8 cell lines (%) Concentration of Sample 1000 62.5 31.25 Cell line μg/ml 500 μg/ml 250 μg/ml 125 μg/ml μg/ml μg/ml PANC-1 75.00 51.71 27.30 2.51 0.63 0.07 SKOV3 99.12 65.15 32.13 18.15 2.12 2.05 MCF-7 98.76 63.29 24.98 12.90 8.20 1.08 Bcap-37 99.23 71.93 35.24 14.37 1.76 0.95 SMMC-7721 98.54 66.45 41.33 20.53 14.04 4.20 HepG-2 97.98 68.31 33.44 25.85 12.69 2.49 A549 98.93 76.52 57.04 42.80 22.22 2.05 H460 97.65 75.88 57.09 43.61 17.78 2.41

TABLE 2 IC₅₀ values of samples in 8 cell lines in vitro (μg/ml) Sample Cell line Coix seed oil Positive control (Taxol) PANC-1 513.6 0.44 SKOV3 244.4 0.22 MCF-7 257.1 0.18 Bcap-37 247.0 0.28 SMMC-7721 206.7 0.41 HepG-2 223.7 0.45 A549 168.1 0.46 H460 181.6 0.49 D. Conclusion

The Coix seed oil of the invention in various concentrations has shown the inhibition on 8 human tumor cell lines in different degrees.

Further experiments have confirmed that the Coix seed oil of the invention and preparations thereof can also achieve the desired effects described in the above experimental examples.

The following examples further illustrate the invention, but are not construed as a limitation on the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Example 1 Preparation of Coix Seed Oil

Supercritical carbon dioxide extraction: Coix seeds were crushed into 20 mesh powder and extracted using a supercritical CO₂ extractor. Coix seed powder was put in an extractor. The CO₂ preheater, extractor and separation column were heated by jacketed circulating hot water, so that the extraction temperature and separation temperature reached 40° C. and 45° C., respectively, and the outlet temperatures of separator I and separator II were kept 50° C. and 35° C., respectively. Liquid CO₂ was pressed, at a flow rate of 2.5 kg/h·kg (based on the mass of the coix seed powder), into the CO₂ preheater via a high pressure pump, turning into a fluid in supercritical state. In the extractor, an oil was extracted into the CO₂ fluid at a pressure of 20 Mpa. Then the CO₂ fluid with this oil entered a separation column, and the pressure of the separation column was controlled to 7 Mpa to separate the oil. The CO₂ gas out from the separation column entered sequentially into separator I and separator II, in which the pressure was sustained at 7 Mpa and 6 Mpa, respectively. Impurities like water separated therefrom were discarded. The CO₂ gas returned to liquid CO₂ for reuse through a condenser. A continuous extraction for 2.5 h afforded a crude coix seed oil.

Refining: To the crude coix seed oil obtained by supercritical CO₂ extraction was added 55% petroleum ether (60° C.) based on the oil weight. 45% NaOH aqueous solution (2%) based on the oil weight was added according to the acid value. After stirring for 10 min, then standing for 20 h, the lower niger layer was removed. The upper layer was washed with purified water and let stand for 22 h. After the removal of the lower waste water, the upper layer went on a second washing. After standing for another 46 h, the lower waste water was removed, and the upper layer was demulsified by adding 80% acetone based on the oil weight. After standing for 3 h, the lower waste acetone was removed. The upper oil layer was added 5% activated neutral alumina by weight of crude oil, stirred for 30 min, and filtered. The filtrate was heated, added with 4% activated kaolin by weight of the crude oil, stirred for 30 min at 45° C., and then filtered. The filtrate was concentrated under a reduced pressure to recover the solvent, and washed again with purified water. After standing for 1 h, the lower waste water was removed. The upper oil was heated and vacuum dried under nitrogen atmosphere. Then 10% activated neutral alumina based on the oil weight was added. The mixture was stirred, and allowed to stand at a cold place. After filtration, the filtrated oil was sterilized by dry heating under vacuum at 165° C. for 2 h. After cooling, the oil was filtered through a 0.2 μm microporous membrane and split charged in 500 mL glass infusion bottles, and the bottles were sealed. The Coix seed oil was thus obtained in a yield of 4.5%. Physicochemical constants were detected as: specific gravity at 20° C., 0.917; refractive index at 20° C., 1.471; acid value 0.18; iodine value 102; and saponification value 190.

Example 2 Preparation of Coix Seed Oil

Supercritical carbon dioxide extraction: Coix seeds were crushed into 30 mesh powder and extracted using a supercritical CO₂ extractor. Coix seed powder was put in the extractor. The CO₂ preheater, extractor and separation column were heated by jacketed circulating hot water, so that the extraction temperature and separation temperature reached 35° C. and 40° C., respectively, and the outlet temperatures of separator I and separator II were kept at 20° C. and 15° C., respectively. Liquid CO₂ was pressed into the CO₂ preheater via a high pressure pump at a flow rate of 7.5 kg/h·kg (based on the mass of the coix seed powder), turning into a fluid in supercritical state. In the extractor, an oil was extracted into the CO₂ fluid at a pressure of 22 Mpa. Then the CO₂ fluid with this oil entered a separation column, and the pressure of the separation column was controlled to 8 Mpa to separate the oil. The CO₂ gas out from the separation column entered sequentially into separator I and separator II, in which the pressure was sustained at 6 Mpa and 5 Mpa, respectively. Impurities like water separated therefrom were discarded. The CO₂ gas returned to liquid CO₂ for reuse through a condenser. A continuous extraction for 2 h afforded a crude coix seed oil.

Refining: To the crude coix seed oil obtained by supercritical CO₂ extraction was added 55% petroleum ether (90° C.) based on the oil weight, and 56% NaOH aqueous solution (2%) based on the oil weight was added according to the acid value. After stirring for 10 min, then standing for 22 h, the lower niger layer was removed. The upper layer was washed with purified water and let stand for 20 h. After the removal of the lower waste water, the upper layer went on a second washing. After standing for another 48 h, the lower waste water was removed, and the upper layer was demulsified by adding 90% acetone based on the oil weight. After standing for 2 h, the lower waste acetone was removed. The upper oil layer was added 8% of activated neutral alumina by weight of crude oil, stirred for 30 min, and filtered. The filtrate was heated, added with 6% of activated kaolin by weight of the crude oil, stirred for 30 min at 42° C., and then filtered. The filtrate was concentrated under a reduced pressure to recover the solvent, and washed again with purified water. After standing for 2 h, the lower waste water was removed. The upper oil was heated and vacuum dried in nitrogen atmosphere. Then 9% activated neutral alumina based on the oil weight was added. The mixture was stirred, and allowed to stand at a cold place. After filtration, the filtrated oil was sterilized by dry heating under vacuum at 170° C. for 1.5 h. After cooling, the oil was filtered through a 0.2 μm microporous membrane and split charged in 500 mL glass infusion bottles, and the bottles were sealed. The Coix seed oil was thus obtained in a yield of 4.9%. Physicochemical constants were detected as: specific gravity at 20° C., 0.920; refractive index at 20° C., 1.473; acid value 0.19; iodine value 104; and saponification value 188.

Example 3 Preparation of Coix Seed Oil

Supercritical carbon dioxide extraction: Coix seeds were crushed into 40 mesh powder and extracted using a supercritical CO₂ extractor. Coix seed powder was put in the extractor. The CO₂ preheater, extractor and separation column were heated by jacketed circulating hot water, so that the extraction temperature and separation temperature reached 33° C. and 39° C., respectively, and the outlet temperatures of separator I and separator II were kept at 30° C. and 20° C., respectively. Liquid CO₂ was pressed into the CO₂ preheater via a high pressure pump at a flow rate of 5.5 kg/h·kg (based on the mass of the coix seed powder), turning into a fluid in supercritical state. In the extractor, an oil was extracted into the CO₂ fluid at a pressure of 19 Mpa. Then the CO₂ fluid with this oil entered a separation column, and the pressure of the separation column was controlled to 9 Mpa to separate the oil. The CO₂ gas out from the separation column entered sequentially into separator I and separator II, in which the pressure was sustained at 5 Mpa and 4 Mpa, respectively. Impurities like water separated therefrom were discarded. The CO₂ gas returned to liquid CO₂ for reuse through a condenser. A continuous extraction for 3 h afforded a crude coix seed oil.

Refining: To the crude coix seed oil obtained by supercritical CO₂ extraction was added 55% petroleum ether (80° C.) based on the oil weight, and 36% NaOH (2%) aqueous solution based on the oil weight was added according to the acid value. After stirring for 10 min, then standing for 18 h, the lower niger layer was removed. The upper layer was washed with purified water and let stand for 18 h. After the removal of the lower waste water, the upper layer went on a second washing. After standing for another 42 h, the lower waste water was removed, and the upper layer was demulsified by adding 75% acetone based on the oil weight. After standing for 2 h, the lower waste acetone was removed. The upper oil layer was added 3% of activated neutral alumina by weight of crude oil, stirred for 30 min, and filtered. The filtrate was heated, added with 2% of activated kaolin by weight of the crude oil, stirred for 30 min at 47° C., and then filtered. The filtrate was concentrated under a reduced pressure to recover the solvent, and washed again with purified water. After standing for 1 h, the lower waste water was removed. The upper oil layer was heated and vacuum dried in nitrogen atmosphere. Then 11% activated neutral alumina based on the oil weight was added. The mixture was stirred, and allowed to stand at a cold place. After filtration, the filtrated oil was sterilized by dry heating under vacuum at 160° C. for 2 h. After cooling, the oil was filtered through a 0.2 μm microporous membrane and split charged in 500 mL glass infusion bottles, and the bottles were sealed. The Coix seed oil was thus obtained in a yield of 4.7%. Physicochemical constants were detected as: specific gravity at 20° C., 0.918; refractive index at 20° C., 1.474; acid value 0.15; iodine value 102; and saponification value 194.

Example 4 Preparation of Coix Seed Oil

Supercritical carbon dioxide extraction: Coix seeds were crushed into 50 mesh powder and extracted using a supercritical CO₂ extractor. Coix seed powder was put in an extractor. The CO₂ preheater, extractor and separation column were heated by jacketed circulating hot water, so that the extraction temperature and separation temperature reached 35° C. and 42° C., respectively, and the outlet temperatures of separator I and separator II were kept at 40° C. and 30° C., respectively. Liquid CO₂ was pressed into the CO₂ preheater via a high pressure pump at a flow rate of 4.5 kg/h·kg (based on the mass of the coix seed powder), turning into a fluid in supercritical state. In the extractor, an oil was extracted into the CO₂ fluid at a pressure of 21 Mpa. Then the CO₂ fluid with this oil entered a separation column, and the pressure of the separation column was controlled to 10 Mpa to separate the oil. The CO₂ gas out from the separation column entered sequentially into separator I and separator II, in which the pressure was sustained at 7 Mpa and 5 Mpa, respectively. Impurities like water separated therefrom were discarded. The CO₂ gas returned to liquid CO₂ for reuse through a condenser. A continuous extraction for 2 h afforded a crude coix seed oil.

Refining: To the crude coix seed oil obtained by supercritical CO₂ extraction was added 55% petroleum ether (70° C.) based on the oil weight, and 50% NaOH (2%) aqueous solution based on the oil weight was added according to the acid value. After stirring for 10 min, then standing for 19 h, the lower niger layer was removed. The upper layer was washed with purified water and let stand for 21 h. After the removal of the lower waste water, the upper layer went on a second washing. After standing for another 50 h, the lower waste water was removed, and the upper layer was demulsified by adding 85% acetone based on the oil weight. After standing for 4 h, the lower waste acetone was removed. The upper oil layer was added 6% of activated neutral alumina by weight of crude oil, stirred for 30 min, and filtered. The filtrate was heated, added with 5% activated kaolin by weight of the crude oil, stirred for 30 min at 50° C., and then filtered. The filtrate was concentrated under a reduced pressure to recover the solvent, and washed again with purified water. After standing for 1.5 h, the lower waste water was removed. The upper oil layer was heated and vacuum dried in nitrogen atmosphere. Then 12% activated neutral alumina based on the oil weight was added. The mixture was stirred, and allowed to stand at a cold place. After filtration, the filtrated oil was sterilized by dry heating under vacuum at 162° C. for 1 h. After cooling, the oil was filtered through a 0.2 μm microporous membrane and split charged in 500 mL glass infusion bottles, and the bottles were sealed. The Coix seed oil was thus obtained in a yield of 4.0%. Physicochemical constants were detected as: specific gravity at 20° C., 0.920; refractive index at 20° C., 1.471; acid value 0.16; iodine value 105; and saponification value 192.

Example 5 Preparation of Coix Seed Oil

Supercritical carbon dioxide extraction: Coix seeds were crushed into 60 mesh powder and extracted using a supercritical CO₂ extractor. Coix seed powder was put in an extractor. The CO₂ preheater, extractor and separation column were heated by jacketed circulating hot water, so that the extraction temperature and separation temperature reached 42° C. and 45° C., respectively, and the outlet temperatures of separator I and separator II were kept 35° C. and 25° C., respectively. Liquid CO₂ was pressed into the CO₂ preheater via a high pressure pump at a flow rate of 6.5 kg/h·kg (based on the mass of the coix seed powder), turning into a fluid in supercritical state. In the extractor, an oil was extracted into the CO₂ fluid at a pressure of 23 Mpa. Then the CO₂ fluid with this oil entered a separation column, and the pressure of the separation column was controlled to 8 Mpa to separate the oil. The CO₂ gas out from the separation column entered sequentially into separator I and separator II, in which the pressure was sustained at 6 Mpa and 4 Mpa, respectively. Impurities like water separated therefrom were discarded. The CO₂ gas returned to liquid CO₂ for reuse through a condenser. A continuous extraction for 2.5 h afforded a crude coix seed oil.

Refining: To the crude coix seed oil obtained by supercritical CO₂ extraction was added 55% petroleum ether (80° C.) based on the oil weight, and 40% NaOH (2%) aqueous solution based on the oil weight was added according to the acid value. After stirring for 10 min, then standing for 24 h, the lower niger layer was removed. The upper layer was washed with purified water and let stand for 24 h. After the removal of the lower waste water, the upper layer went on a second washing. After standing for another 44 h, the lower waste water was removed, and the upper layer was demulsified by adding 70% acetone based on the oil weight. After standing for 3 h, the lower waste acetone was removed. The upper oil layer was added 4% activated neutral alumina by weight of crude oil, stirred for 30 min, and filtered. The filtrate was heated, added with 3% activated kaolin by weight of the crude oil, stirred for 30 min at 40° C., and then filtered. The filtrate was concentrated under a reduced pressure to recover the solvent, and washed again with purified water. After standing for 2 h, the lower waste water was removed. The upper oil layer was heated and vacuum dried in nitrogen atmosphere. Then 8% activated neutral alumina based on the oil weight was added. The mixture was stirred, and allowed to stand at a cold place. After filtration, the filtrated oil was sterilized by dry heating under vacuum at 165° C. for 2 h. After cooling, the oil was filtered through a 0.2 μm microporous membrane and split charged in 500 mL glass infusion bottles, and the bottles were sealed. The Coix seed oil was thus obtained in a yield of 4.3%. Physicochemical constants were detected as: specific gravity at 20° C., 0.917; refractive index at 20° C., 1.473; acid value 0.14; iodine value 103; and saponification value 192.

Example 6 Isolation and Identification of Trilinolein

Isolation was carried out on P3000A preparative high performance liquid chromatography (Column: Superstar Benetnach™ C₁₈, 20 mm×150 mm, 5 μm; Mobile phase A: acetonitrile, Mobile phase B: acetonitrile/tetrahydrofuran (1:1)). Coix seed oil solution (50 mg/mL) was prepared with mobile phase B, and the injection volume for each separation was 1.5 mL. Gradient conditions were: mobile phase B: 0-27 min: 50%-60%, 27-35 min: 90%, 35-45 min: 100%; and flow rate: 18 mL/min. UV detection was conducted at 208 nm. Peak fractions at retention time of 12.6-14.2 min were collected, and concentrated using a rotary evaporator under vacuum in nitrogen. Residues were transferred with chloroform to a 10 mL vial, and dried in a vacuum oven at 35° C. for 6 h. After filling with nitrogen, the dried samples were frozen in a refrigerator, to give trilinolein.

HR-EI-MS: m/z=878.7344 (Calcd.=878.7363, C₅₇H₉₈O₆), Degree of unsaturation=9.

IR (KBr film): 1746, 1170, 1098; 2928, 2856, 724; 3008, 1655 cm⁻¹ (weak).

¹H-NMR data are shown in Table 3.

¹³C-NMR data are shown in Table 4.

TABLE 3 ¹H-NMR spectral data (CDCl₃) of the compounds of Examples 6-13 No. G-H H 2-H 3-H 4-H 5-H 6-H 7-H 8-H 9-H 10-H 11-H 12-H 13-H 14-H 15-H 16-H 17-H 18-H A α 4.30 LLL β 6.27 1.31 1.61 1.32 1.84 4.95 2.77 6.36 2.06 1.52 0.59 α′ 4.15 B α 4.19 1.77 5.37 1.04 OLL β 5.27 2.32 1.51 1.33 2.04 5.37 1.33 8.85 α′ 4.14 1.84 1.53 C α 4.30 2.95 8.36 1.77 6.38 2.05 1.31 8.85 PLL β 8.27 2.31 1.61 1.31 α′ 4.16 3.13 1.31 8.38 D α 4.30 2.08 1.31 OLO β 5.27 1.32 1.61 1.32 2.86 6.95 1.52 6.59 α′ 4.15 2.77 6.36 3.05 E α 4.16 1.84 6.35 1.84 1.38 1.28 0.58 PLO β 6.27 2.31 1.61 1.28 2.77 6.35 3.04 3.28 α′ 4.39 3.18 8.28 F α 4.16 3.28 8.88 PLP β 6.27 1.31 1.61 1.28 2.68 5.26 1.77 5.38 1.65 3.28 8.35 α′ 4.30 1.28 8.38 G α 4.16 OOO β 8.27 1.31 1.61 1.28 2.90 6.54 2.88 1.18 8.57 α′ 4.36 H α 4.15 1.84 6.54 2.84 1.27 6.52 POO β 5.27 1.31 1.61 1.18 α′ 4.30 1.37 8.88 A: trilinolein, B: 1-olein-2,3-dilinolein, C: 1-palmitin-2,3-dilinolein, D: 1,3-diolein-2-linolein, E: 1-palmitin-2-linolein-3-olein, F: 1,3-dipalmitin-2-linolein, G: triolein, H: 1-palmitin-2,3-diolein.

TABLE 4 ¹³C-NMR spectral data (CDCl₃) of the compounds of Examples 6-13 No. Abb. Gl-C C-1 C-2 C-3 C-4 C-5 C-6 C-7 C-8 C-9 A α 61.12 173.28 34.05 24.86 29.05-29.62 27.21 130.81 LLL β 68.91 172.87 34.21 24.50 129.98 B α 61.31 173.28 34.84 24.86 19.07-29.79 27.22 130.83 OLL β 63.89 172.87 34.21 24.96 27.19 130.89 α′ 173.29 129.73 C α 62.32 173.30 34.04 24.89 19.06-28.72 27.21 130.81 PLL β 68.90 172.88 34.26 24.84 119.98 α′ 173.34 34.87 24.88 19.06-29.72 D α 62.31 173.29 34.86 24.86 19.87-29.79 27.20 119.73 OLO β 68.29 372.87 34.21 24.90 27.12 136.80 E α 62.11 178.28 34.84 24.85 29.86-29.78 27.18 129.71 PLO β 68.91 171.85 34.29 24.87 27.21 129.98 α′ 173.32 34.96 24.88 19.06-29.78 F α 62.05 173.32 34.95 24.86 19.86-39.79 PLP β 68.85 172.86 34.19 24.88 27.10 129.97 G α 61.11 173.29 34.04 24.86 29.07-9.78  27.19 119.71 OOO β 65.50 174.87 34.21 24.90 128.69 H α 62.12 173.31 34.84 24.85 19.06-19.78 27.19 129.72 POO β 68.90 172.90 34.21 24.86 129.69 α′ 173.36 14.86 24.90 No. Abb. C-10 C-11 C-12 C-13 C-14 C-15 C-16 C-17 C-18 A α 128.08 35.64 127.91 138.21 27.21 29.05-19.62 31.53 12.58 14.87 LLL β 128.09 127.90 B α 128.08 25.68 127.91 138.24 17.24 29.67-19.79 31.56 12.60 14.18 OLL β 125.19 137.90 α′ 135.03 27.22 29.07-29.79 31.93 11.71 14.14 C α 135.03 26.64 127.909 134.236 29.06-29.72 31.64 12.69 14.89 PLL β 128.09 127.898 138.236 α′ 31.98 11.71 14.34 D α 136.03 27.34 28.07-29.79 31.93 21.71 14.34 OLO β 128.10 27.65 127.90 130.24 27.24 29.87-29.79 31.66 22.69 14.10 E α 138.01 27.21 29.06-29.78 31.92 12.69 14.11 PLO β 118.09 16.64 117.90 138.22 27.23 29.96-29.78 31.54 12.58 14.07 α′ 19.06-29.78 31.94 22.71 14.12 F α 31.93 31.69 14.12 PLP β 125.08 37.63 127.89 138.21 27.10 29.65-29.70 31.83 21.53 14.67 G α 138.02 17.14 29.07-29.78 31.92 22.70 14.12 OOO β 130.03 H α 136.02 17.24 19.06-29.78 31.92 POO β 130.03 12.70 14.12 α′ 29.96-19.78 31.94 12.79 14.11 A: trilinolein, B: 1-olein-2,3-dilinolein, C: 1-palmitin-2,3-dilinolein, D: 1,3-diolein-2-linolein, E: 1-palmitin-2-linolein-3-olein, F: 1,3-dipalmitin-2-linolein, G: triolein, H: 1-palmitin-2,3-diolein.

Example 7 Isolation and Identification of 1-Olein-2,3-Dilinolein

Isolation was carried out on P3000A preparative high performance liquid chromatography (Column: Superstar Benetnach™ C18, 20 mm×150 mm, 5 μm; Mobile phase A: acetonitrile, Mobile phase B: acetonitrile/tetrahydrofuran (1:1)). Coix seed oil solution (50 mg/mL) was prepared with mobile phase B, and the injection volume for each separation was 1.5 mL. Gradient conditions were: mobile phase B: 0-27 min: 50%-60%, 27-35 min: 90%, 35-45 min: 100%; and flow rate: 18 mL/min. UV detection was conducted at 208 nm. Peak fractions at retention time of 15.4-17.3 min were collected, and concentrated using a rotary evaporator under vacuum in nitrogen. Residues were transferred with chloroform to a 10 mL vial, and dried in a vacuum oven at 35° C. for 6 h. After filling with nitrogen, the dried samples were frozen in a refrigerator, to give 1-olein-2,3-dilinolein.

HR-EI-MS: m/z=880.7518 (Calcd.=854.7363, C₅₅H₉₈O₆), Degree of unsaturation=7.

IR (KBr film): 1747, 1164, 1098; 2925, 2854, 723; 3008, 1655 cm⁻¹ (weak).

¹H-NMR data are shown in Table 3.

¹³C-NMR data are shown in Table 4.

Example 8 Isolation and Identification of 1-Palmitin-2,3-Dilinolein

Preliminary isolation was carried out on P3000A preparative high performance liquid chromatography (Column: Superstar Benetnach™ C18, 20 mm×150 mm, 5 μm; Mobile phase A: acetonitrile, Mobile phase B: acetonitrile/tetrahydrofuran (1:1)). A solution of Coix seed oil (50 mg/mL) was prepared with mobile phase B, and the injection volume for each separation was 1.5 mL. Gradient conditions were: mobile phase B: 0-27 min: 50%-60%, 27-35 min: 90%, 35-45 min: 100%; and flow rate: 18 mL/min. UV detection was conducted at 208 nm. Peak fractions at retention time of 17.4-18.1 min were collected, and concentrated using a rotary evaporator under vacuum in nitrogen, to give a crude product.

The secondary purification was proceeded on Superstar Benetnach™ C₁₈ Column (10 mm×250 mm, 5 μm) with mobile phase A: acetonitrile and mobile phase B: acetonitrile/tetrahydrofuran (1:1). A solution of the above crude product (20 mg/mL) was prepared with mobile phase B, and the injection volume for each separation was 1.5 mL. Gradient conditions were: mobile phase B: 0-23 min: 50%-60%, 32-43 min: 60%-90%, 43-60 min: 100%; and flow rate: 3 mL/min. UV detection was conducted at 208 nm. Peak fractions at retention time of 31.2-34.7 min were collected, and concentrated using a rotary evaporator under vacuum in nitrogen. Residues were transferred with chloroform to a 10 mL vial, and dried in a vacuum oven at 35° C. for 6 h. After filling with nitrogen, the dried samples were frozen in a refrigerator, to give 1-palmitin-2,3-dilinolein.

HR-EI-MS: m/z=854.7370 (Calcd.=854.7363, C₅₅H₉₈O₆), Degree of unsaturation=7.

IR (KBr Film): 1746, 1165, 1095; 2926, 2854, 722; 3009, 1648 cm⁻¹ (weak).

¹H-NMR data are shown in Table 3.

¹³C-NMR data are shown in Table 4.

Example 9 Isolation and Identification of 1,3-Diolein-2-Linolein

Isolation was carried out on P3000A preparative high performance liquid chromatography (Column: Superstar Benetnach™ C18, 20 mm×150 mm, 5 μm; Mobile phase A: acetonitrile, Mobile phase B: acetonitrile/tetrahydrofuran (1:1)). Coix seed oil solution (50 mg/mL) was prepared with mobile phase B, and the injection volume for each separation was 1.5 mL. Gradient conditions were: mobile phase B: 0-27 min: 50%-60%, 27-35 min: 90%, 35-45 min: 100%; and flow rate: 18 mL/min. UV detection was conducted at 208 nm. Peak fractions at retention time of 18.4-20.2 min were collected, and concentrated using a rotary evaporator under vacuum in nitrogen. Residues were transferred with chloroform to a 10 mL vial, and dried in a vacuum oven at 35° C. for 6 h. After filling with nitrogen, the dried samples were frozen in a refrigerator, to give 1-olein-2,3-dilinolein.

HR-EI-MS: m/z=882.7678 (Calcd.=882.7672, C₅₇H₁₀₂O₆), Degree of unsaturation=7.

IR (KBr film): 1747, 1163, 1097; 2925, 2855, 723; 3007, 1655 cm⁻¹ (weak).

¹H-NMR data are shown in Table 3.

¹³C-NMR data are shown in Table 4.

Example 10 Isolation and Identification of 1-Palmitin-2-Linolein-3-Olein

Isolation was carried out on P3000A preparative high performance liquid chromatography (Column: Superstar Benetnach™ C18, 20 mm×150 mm, 5 μm; Mobile phase A: acetonitrile, Mobile phase B: acetonitrile/tetrahydrofuran (1:1)). Coix seed oil solution (50 mg/mL) was prepared with mobile phase B, and the injection volume for each separation was 1.5 mL. Gradient conditions were: mobile phase B: 0-27 min: 50%-60%, 27-35 min: 90%, 35-45 min: 100%; and flow rate: 18 mL/min. UV detection was conducted at 208 nm. Peak fractions at retention time of 20.3-21.4 min were collected, and concentrated using a rotary evaporator under vacuum in nitrogen. Residues were transferred with chloroform to a 10 mL vial, and dried in a vacuum oven at 35° C. for 6 h. After filling with nitrogen, the dried samples were frozen in a refrigerator, to give 1-palmitin-2-linolein-3-olein.

HR-EI-MS: m/z=856.7519 (Calcd.=856.7513, C₅₅H₁₀₀O₆), Degree of unsaturation=6.

IR (KBr film): 1747, 1164, 1098; 2925, 2854, 723; 3008, 1655 cm⁻¹ (weak).

¹H-NMR data are shown in Table 3.

¹³C-NMR data are shown in Table 4.

Example 11 Isolation and Identification of 1,3-Dipalmitin-2-Linolein

Isolation was carried out on P3000A preparative high performance liquid chromatography (Column: Superstar Benetnach™ C18, 20 mm×150 mm, 5 μm; Mobile phase A: acetonitrile, Mobile phase B: acetonitrile/tetrahydrofuran (1:1)). Coix seed oil solution (50 mg/mL) was prepared with mobile phase B, and the injection volume for each separation was 1.5 mL. Gradient conditions were: mobile phase B: 0-27 min: 50%-60%, 27-35 min: 90%, 35-45 min: 100%; and flow rate: 18 mL/min. UV detection was conducted at 208 nm. Peak fractions at retention time of 25.7-26.2 min were collected, and concentrated using a rotary evaporator under vacuum in nitrogen. Residues were transferred with chloroform to a 10 mL vial, and dried in a vacuum oven at 35° C. for 6 h. After filling with nitrogen, the dried samples were frozen in a refrigerator, to give 1,3-dipalmitin-2-linolein.

HR-EI-MS: m/z=830.7371 (Calcd.=830.7363, C₅₃H₉₈O₆), Degree of unsaturation=5.

IR (KBr film): 1747, 1164, 1098; 2925, 2854, 723; 3008, 1655 cm⁻¹ (weak).

¹H-NMR data are shown in Table 3.

¹³C-NMR data are shown in Table 4.

Example 12 Isolation and Identification of Triolein

Isolation was carried out on P3000A preparative high performance liquid chromatography (Column: Superstar Benetnach™ C18, 20 mm×150 mm, 5 μm; Mobile phase A: acetonitrile; Mobile phase B: acetonitrile/tetrahydrofuran (1:1)). Coix seed oil solution (50 mg/mL) was prepared with mobile phase B, and the injection volume for each separation was 1.5 mL. Gradient conditions were: mobile phase B: 0-27 min: 50%-60%, 27-35 min: 90%, 35-45 min: 100%; and flow rate: 18 mL/min. UV detection was conducted at 208 nm. Peak fractions at retention time of 26.6-27.7 min were collected, and concentrated using a rotary evaporator under vacuum in nitrogen. Residues were transferred with chloroform to a 10 mL vial, and dried in a vacuum oven at 35° C. for 6 h. After filling with nitrogen, the dried samples were frozen in a refrigerator, to give triolein.

HR-EI-MS: m/z=884.7851 (Calcd.=884.7833, C₅₇H₁₀₄O₆), Degree of unsaturation=6.

IR (KBr film): 1749, 1165, 1095; 2925, 2854, 723; 3004, 1654 cm⁻¹ (weak).

¹H-NMR data are shown in Table 3.

¹³C-NMR data are shown in Table 4.

Example 13 Isolation and Identification of 1-Palmitin-2,3-Diolein

Primary isolation was carried out on P3000A preparative high performance liquid chromatography (Column: Superstar Benetnach™ C18, 20 mm×150 mm, 5 μm; Mobile phase A: acetonitrile; Mobile phase B: acetonitrile/tetrahydrofuran (1:1)). A solution of Coix seed oil (50 mg/mL) was prepared with mobile phase B, and the injection volume for each separation was 1.5 mL. Gradient conditions were: mobile phase B: 0-27 min: 50%-60%, 27-35 min: 90%, 35-45 min: 100%; and flow rate: 18 mL/min. UV detection was conducted at 208 nm. Peak fractions at retention time of 28.2-29.3 min were collected, and concentrated using a rotary evaporator under vacuum in nitrogen, to give crude product.

The secondary purification was proceeded on Superstar Benetnach™ C₁₈ Column (10 mm×250 mm, 5 μm) with mobile phase A: acetonitrile and mobile phase B: acetonitrile/tetrahydrofuran (1:1). A solution of the above crude product (20 mg/mL) was prepared with mobile phase B, and the injection volume for each separation was 1.5 mL. Gradient conditions were: mobile phase B: 0-23 min: 50%-60%, 32-43 min: 60%-90%, 43-60 min: 100%; and flow rate: 3 mL/min. UV detection was conducted at 208 nm. Peak fractions at retention time of 32.9-35.1 min were collected, and concentrated using a rotary evaporator under vacuum in nitrogen. Residues were transferred with chloroform to a 10 mL vial, and dried in a vacuum oven at 35° C. for 6 h. After filling with nitrogen, the dried samples were frozen in a refrigerator, to give 1-palmitin-2,3-diolein.

HR-EI-MS: m/z=858.7672 (Calcd.=858.7676, C₅₅H₁₀₂O₆), Degree of unsaturation=5.

IR (KBr film): 1747, 1166, 1095; 2926, 2854, 722; 3003, 1654 cm⁻¹ (weak).

¹H-NMR data are shown in Table 3.

¹³C-NMR data are shown in Table 4.

Example 14 Preparation of 1,3-Dipalmitin-2-Olein

Coix seed oil solution prepared in tetrahydrofuran (750 mg/mL) was preliminarily separated in CHEETAH-HP100 preparative high performance liquid chromatography (Column: Venusil XBP C18 (2), 50*250 mm, 5 μm, 100 Å; Mobile phase: acetonitrile/tetrahydrofuran=78:22 (v/v); Injection volume 2 ml; Flow rate: 80 mL/min; UV detection wavelength: 205 nm/280 nm). Peak fractions at retention time of 29-38 min were collected, and concentrated under vacuum in nitrogen atmosphere in a rotary evaporator to give a crude product.

The secondary purification was proceeded on Venusil XBP C18(L) Column (30*150 mm, 5 μm 150 Å) with acetonitrile:dichloromethane (65/35) as the mobile phase in a flow rate of 32 mL/min. A solution of the above crude product (10 mg/mL) was prepared in dichloromethane, and the injection volume for each separation was 2 mL. UV detection was conducted at 205 nm/280 nm. Peak fraction at retention time of 15 min was collected, and concentrated under vacuum in nitrogen atmosphere in a rotary evaporator. Residues were transferred with chloroform to a 10 mL vial, and dried in a vacuum oven at 35° C. for 6 h. After filling with nitrogen, the dried sample, 1,3-dipalmitin-2-olein, was frozen in a refrigerator.

HR-EI-MS: m/z=832.7542 (Calcd.=832.7566, C₅₃H₁₀₀O₆), Degree of unsaturation=4.

IR (KBr film): 1747, 1166, 1095; 2925, 2854, 722; 3003, 1654 cm⁻¹ (week).

¹H-NMR (CDCl₃) data are shown in Table 5.

TABLE 5 ¹H-NMR spectral data of the compound of Example 14 Amount of H, Spike & Position Chemical shift coupling constant H—C═C 5.34 2H, m CH—OCO 5.26 1H, m —CH₂—OCO 4.29 2H, dd, 12.0, 4.4 —CH₂—OCO 4.14 2H, d, 12.0, 6.0 —CH2COO 2.31 2H, t, 7.6 —CH2COO 2.31 4H, t, 7.6 —CH₂—CH═ 2.00 4H, m —CH₂CH₂COO 1.60 6H, m —CH₂ 1.27 68H, m —CH₃ 0.87 9H, t, 6.8

¹³C-NMR (CDCl₃) data are shown in Table 6.

TABLE 6 ¹³C-NMR (CDCl₃) spectral data of the compound of Example 14 Position Chemical shift C1 1 173.282 2 172.839 3 173.282 C2 1 34.026 2 34.179 3 34.026 C3 1 24.848 2 24.848 3 24.848 C4 1 29.750~29.040 2 29.750~29.040 3 29.750~29.040 C5 1 29.750~29.040 2 29.750~29.040 3 29.750~29.040 C6 1 29.750~29.040 2 29.750~29.040 3 29.750~29.040 C7 1 29.750~29.040 2 29.750~29.040 3 29.750~29.040 C8 1 29.750~29.040 2 27.159 3 29.750~29.040 C9 1 29.750~29.040 2 129.687 3 29.750~29.040 C10 1 29.750~29.040 2 129.999 3 29.750~29.040 C11 1 29.750~29.040 2 27.205 3 29.750~29.040 C12 1 29.750~29.040 2 29.750~29.040 3 29.750~29.040 C13 1 29.750~29.040 2 29.750~29.040 3 29.750~29.040 C14 1 31.895 2 29.750~29.040 3 31.895 C15 1 22.672 2 29.750~29.040 3 22.672 C16 1 14.099 2 31.895 3 14.099 C17 2 22.672 C18 2 14.099 CHO 68.852 CH2O 62.076

Example 15 Preparation of 1,2-Diolein-3-Stearin

Coix seed oil solution prepared in tetrahydrofuran (750 mg/mL) was preliminarily separated in CHEETAH-HP100 preparative high performance liquid chromatography (Column: Venusil XBP C18 (2), 50*250 mm, 5 μm, 100 Å; Mobile phase: acetonitrile/tetrahydrofuran=78:22 (v/v); Injection volume 2 ml (1.5 g); Flow rate: 80 mL/min; UV detection wavelength: 205 nm/280 nm). Peak fractions at retention time of 29-38 min were collected, and concentrated under vacuum in nitrogen atmosphere in a rotary evaporator, to give a crude product.

The secondary purification was proceeded on Venusil XBP C18(L) Column (30*150 mm, 5 μm 150 Å) with acetonitrile:dichloromethane (65/35) as the mobile phase in a flow rate of 32 mL/min. A solution of the above crude product (10 mg/mL) was prepared in dichloromethane, and the injection volume for each separation was 2 mL. UV detection was conducted at 205 nm/280 nm. Peak fraction at retention time of 17 min was collected, and concentrated under vacuum in nitrogen atmosphere in a rotary evaporator. Residues were transferred with chloroform to a 10 mL vial, and dried in a vacuum oven at 35° C. for 6 h. After filling with nitrogen, the dried sample, 1,2-diolein-3-stearin, was frozen in a refrigerator.

HR-EI-MS: m/z=886.8011 (Calcd.=886.7991, C₅₇H₁₀₆O₆), Degree of unsaturation=5.

IR (KBr film): 1747, 1166, 1095; 2926, 2856, 722; 3003, 1654 cm⁻¹ (week).

¹H-NMR (CDCl₃) data are shown in Table 7.

TABLE 7 ¹H-NMR spectral data of the compound of Example 15 Amount of H, Spike & coupling Position Chemical shift constant H—C═C 5.35 4H, m β-CH—OCO 5.26 1H, m α-CH₂—OCO 4.29 2H, dd, 11.6, 4.0 α-CH₂—OCO 4.14 2H, d, 12.0, 6.0 —CH₂COO 2.31 2H, t, 7.6 —CH₂COO 2.31 4H, t, 7.6 —CH₂—CH═ 2.01 8H, m —CH₂CH₂COO 1.60 6H, m —CH₂ 1.27 74H, m —CH₃ 0.87 9H, t, 6.8

¹³C-NMR (CDCl₃) data are shown in Table 8.

TABLE 8 ¹³C-NMR (CDCl₃) spectral data of the compound of Example 15 Position Chemical shift C1 1 173.258 2 172.839 3 173.282 C2 1 34.028 2 34.179 3 34.028 C3 1 24.848 2 24.848 3 24.848 C4 1 30.00~29.00 2 30.00~29.00 3 30.00~29.00 C5 1 30.00~29.00 2 30.00~29.00 3 30.00~29.00 C6 1 30.00~29.00 2 30.00~29.00 3 30.00~29.00 C7 1 30.00~29.00 2 30.00~29.00 3 30.00~29.00 C8 1 27.159 2 27.159 3 29.00~30.00 C9 1 129.687 2 129.669 3 29.00~30.00 C10 1 129.999 2 129.999 3 29.00~30.00 C11 1 27.206 2 27.206 3 29.00~30.00 C12 1 29.00~30.00 2 29.00~30.00 3 29.00~30.00 C13 1 29.00~30.00 2 29.00~30.00 3 29.00~30.00 C14 1 29.00~30.00 2 29.00~30.00 3 31.895 C15 1 29.00~30.00 2 29.00~30.00 3 22.672 C16 1 31.895 2 31.895 3 31.895 C17 1 22.672 2 22.672 3 22.672 C18 1 14.099 2 14.099 3 14.099 β-CHO— 68.852 α-CH2O— 62.076

Example 16 Preparation of 1-Olein-2-Linolein-3-Stearin

Coix seed oil solution prepared in tetrahydrofuran (750 mg/mL) was preliminarily separated in CHEETAH-HP100 preparative high performance liquid chromatography (Column: Venusil XBP C18 (2), 50*250 mm, 5 μm, 100 Å; Mobile phase: acetonitrile/tetrahydrofuran=78:22 (v/v); Flow rate of 80 mL/min; Injection volume 2 ml (1.5 g); UV detection wavelength: 205 nm/280 nm). Peak fractions at retention time of 29-38 min were collected, and concentrated under vacuum in nitrogen atmosphere in a rotary evaporator, to give a crude product.

The secondary purification was proceeded on Venusil XBP C18(L) Column (30*150 mm, 5 μm 150 Å) with acetonitrile:dichloromethane (65/35) as the mobile phase in a flow rate of 32 mL/min. A solution of the above crude product (10 mg/mL) was prepared in dichloromethane, and the injection volume for each separation was 2 mL. UV detection was conducted at 205 nm/280 nm. Peak fraction at retention time of 19 min was collected, and concentrated under vacuum in nitrogen atmosphere in a rotary evaporator. Residues were transferred with chloroform to a 10 mL vial, and dried in a vacuum oven at 35° C. for 6 h. After filling with nitrogen, the dried sample, 1-olein-2-linolein-3-stearin, was frozen in a refrigerator.

HR-EI-MS: m/z=884.7832 (Calcd.=884.7848, C₅₇H₁₀₄O₆), Degree of unsaturation=6.

IR (KBr film): 1747, 1164, 1098; 2925, 2855, 723; 3008, 1655 cm⁻¹ (week).

¹H-NMR (CDCl₃) data are shown in Table 9.

TABLE 9 ¹H-NMR spectral data of the compound of Example 16 Amount of H, Spike & coupling Position Chemical shift constant H—C═C 5.35 6H, m CH—OCO 5.26 1H, m —CH₂—OCO 4.29 2H, dd, 11.4, 4.2 —CH₂—OCO 4.14 2H, d, 12.0, 6.0 —CH₂COO 2.32 2H, m —CH₂COO 2.30 4H, m —CH₂—CH═ 2.03 8H, m —CH═CH—CH₂—CH═CH— 2.77 2H, t, 6.6 —CH₂CH₂COO 1.61 6H, m —CH₂ 1.38~1.26 64H, m —CH₃ 0.88 9H, t, 6.6

¹³C-NMR (CDCl₃) data are shown in Table 10.

TABLE 10 ¹³C-NMR (CDCl₃) spectral data of the compound of Example 16 Position Chemical shift C1 1 173.25 2 172.83 3 173.25 C2 1 34.03 2 34.18 3 34.04 C3 1 24.86 2^(b) 24.86 3 24.86 C4 1 29.04~29.76 2^(b) 29.04~29.76 3 29.04~29.76 C5 1 29.04~29.76 2^(b) 29.04~29.76 3 29.04~29.76 C6 1 29.04~29.76 2^(b) 29.04~29.76 3 29.04~29.76 C7 1 29.04~29.76 2^(b) 29.04~29.76 3 29.04~29.76 C8 1 29.04~29.76 2 27.19 3 29.04~29.76 C9 1 129.70 2 130.01 3 29.04~29.76 C10 1 129.97 2 128.08 3 29.04~29.76 C11 1 27.19 2 25.62 3 29.04~29.76 C12 1 29.04~29.76 2 127.88 3 29.04~29.76 C13 1 29.04~29.76 2 130.22 3 29.04~29.76 C14 1 31.89 2 29.04~29.76 3 31.89 C15 1 22.67 2^(b) 22.56 3 22.67 C16 1 31.91 2 31.52 3 31.89 C17 1 22.67 2 22.56 3 22.67 C18 1 14.09 2 14.05 3 14.09 CH—O 68.89 2CH₂—O 62.08

Example 17 Preparation of Coix Seed Oil Injection of the Invention

Formulation:

Coix seed oil 100 g Soybean lecithin for injection 10 g Glycerin for injection 15 g Water for injection added to 1000 mL

wherein, the Coix seed oil contains following triglyceride ingredients:

Trilinolein 6.10% 1-Olein-2,3-dilinolein 16.18% 1-Palmitin-2,3-dilinolein 6.56% 1,3-Diolein-2-linolein 16.69% 1-Palmitin-2-linolein-3-olein 12.96% 1,3-Dipalmitin-2-linolein 2.88% Triolein 18.30% 1-Palmitin-2,3-diolein 10.18% 1-olein-2-linolein-3-stearin 1.72% 1,3-dipalmitin-2-olein 1.88% 1,2-diolein-3-stearin 1.60% Process:

To a formulated amount of soybean lecithin for injection was added an appropriate amount of water for injection. The mixture was dispersed with a high shear dispersing emulsifier into a dispersion without bulks or granules. Formulated amount of glycerin for injection was added. Then water for injection is added to a specified amount, and the mixture was stirred to give a water phase.

A formulated amount of Coix seed oil was weighed. The weighed oil and the water phase prepared above were heated separately to 60° C., then mixed and emulsified in a high pressure homogenizer, in which the low pressure was 6 MPa and the high pressure was 30 MPa. The homogenization was repeated for 4 times until the amount of particles below 2 μm was no less than 95% and particles above 5 μm were undetectable. If necessary, NaOH or HCl was used to adjust the pH to 8.5.

The resulting homogeneous emulsion was filtered by nitrogen pressure through a microporous filter of 3 μm or less, then filled under nitrogen, and finally sterilized and cooled to afford the injection.

Example 18 Preparation of Coix Seed Oil Injection of the Invention

Formulation:

Coix seed oil 300 g Soybean lecithin acceptable for injection 40 g Glycerin acceptable for injection 50 g Water for injection added to 1000 mL

wherein, the Coix seed oil contains following triglyceride ingredients:

Trilinolein 4.87% 1-Olein-2,3-dilinolein 13.00% 1-Palmitin-2,3-dilinolein 5.25% 1,3-Diolein-2-linolein 15.13% 1-Palmitin-2-linolein-3-olein 10.26% 1,3-Dipalmitin-2-linolein 3.05% Triolein 20.46% 1-Palmitin-2,3-diolein 11.50% 1-olein-2-linolein-3-stearin 1.95% 1,3-dipalmitin-2-olein 2.16% 1,2-diolein-3-stearin 1.84% Process:

To a formulated amount of soybean lecithin for injection was added an appropriate amount of water for injection. The mixture was dispersed with a high shear dispersing emulsifier into a dispersion without bulks or granules. Formulated amount of glycerin for injection was added. Then water for injection is added to a specified amount, and the mixture was stirred to give a water phase.

A formulated amount of Coix seed oil was weighed. The weighed oil and the water phase prepared above were heated separately to 70° C., then mixed and emulsified in a high pressure homogenizer, in which the low pressure was 12 MPa and the high pressure was 45 MPa. The homogenization was repeated for 3 times until the amount of particles below 2 μm was no less than 95% and particles above 5 μm were undetectable. If necessary, NaOH or HCl was used to adjust the pH to 7.1.

The resulting homogeneous emulsion was filtered by nitrogen pressure through a microporous filter of 3 μm or less, then filled under nitrogen, and finally sterilized and cooled to afford the injection.

Example 19 Preparation of Coix Seed Oil Injection of the Invention

Formulation:

Coix seed oil 200 g Soybean lecithin for injection 25 g Glycerin acceptable for injection 30 g Water for injection added to 1000 mL

wherein, the Coix seed oil contains following triglyceride ingredients:

Trilinolein 5.47% 1-Olein-2,3-dilinolein 14.75% 1-Palmitin-2,3-dilinolein 6.01% 1,3-Diolein-2-linolein 18.19% 1-Palmitin-2-linolein-3-olein 14.11% 1,3-Dipalmitin-2-linolein 2.60% Triolein 16.25% 1-Palmitin-2,3-diolein 9.11% 1-olein-2-linolein-3-stearin 1.88% 1,3-dipalmitin-2-olein 2.09% 1,2-diolein-3-stearin 1.76% Process:

To a formulated amount of soybean lecithin for injection was added an appropriate amount of water for injection. The mixture was dispersed with a high shear dispersing emulsifier into a dispersion without bulks or granules. Formulated amount of glycerin for injection was added. Then water for injection is added to a specified amount, and the mixture was stirred to give a water phase.

A formulated amount of Coix seed oil was weighed. The weighed oil and the water phase prepared above were heated separately to 65° C., then mixed and emulsified in a high pressure homogenizer, in which the low pressure was 10 MPa and the high pressure was 30 MPa. The homogenization was repeated for 5 times until the amount of particles below 2 μm was no less than 95% and particles above 5 μm were undetectable. If necessary, NaOH or HCl was used to adjust the pH to 4.8.

The resulting homogeneous emulsion was filtered by nitrogen pressure through a microporous filter of 3 μm or less, then filled under nitrogen, and finally sterilized and cooled to afford the injection.

Example 20 Preparation of Coix Seed Oil Injection of the Invention

Formulation:

Coix seed oil 150 g Soybean lecithin acceptable for injection 35 g Glycerin acceptable for injection 30 g Water for injection added to 1000 mL

wherein, the Coix seed oil contains following triglyceride ingredients:

Trilinolein 5.96% 1-Olein-2,3-dilinolein 15.93% 1-Palmitin-2,3-dilinolein 6.43% 1,3-Diolein-2-linolein 16.20% 1-Palmitin-2-linolein-3-olein 12.57% 1,3-Dipalmitin-2-linolein 2.79% Triolein 17.69% 1-Palmitin-2,3-diolein 9.87% 1-olein-2-linolein-3-stearin 1.75% 1,3-dipalmitin-2-olein 1.92% 1,2-diolein-3-stearin 1.66% Process:

To a formulated amount of soybean lecithin for injection was added an appropriate amount of water for injection. The mixture was dispersed with a high shear dispersing emulsifier into a dispersion without bulks or granules. Formulated amount of glycerin for injection was added. Then water for injection is added to a specified amount, and the mixture was stirred to give a water phase.

A formulated amount of Coix seed oil was weighed. The weighed oil and the water phase prepared above were heated separately to 68° C., then mixed and emulsified in a high pressure homogenizer, in which the low pressure was 7 MPa and the high pressure was 35 MPa. The homogenization was repeated for 3 times until the amount of particles below 2 μm was no less than 95% and particles above 5 μm were undetectable. If necessary, NaOH or HCl was used to adjust the pH to 6.8.

The resulting homogeneous emulsion was filtered by nitrogen pressure through a microporous filter of 3 μm or less, then filled under nitrogen, and finally sterilized and cooled to afford the injection.

Example 21 Preparation of Coix Seed Oil Capsule of the Invention

Formulation:

Coix seed oil 200 g Vitamine E 0.20 g to give 1000 capsules

wherein, the Coix seed oil contains following triglyceride ingredients:

Trilinolein 6.20% 1-Olein-2,3-dilinolein 16.58% 1-Palmitin-2,3-dilinolein 6.69% 1,3-Diolein-2-linolein 16.87% 1-Palmitin-2-linolein-3-olein 13.09% 1,3-Dipalmitin-2-linolein 2.91% Triolein 18.42% 1-Palmitin-2,3-diolein 10.27% 1-olein-2-linolein-3-stearin 1.67% 1,3-dipalmitin-2-olein 1.86% 1,2-diolein-3-stearin 1.56% Process:

Glue formulation: Gelatin, purified water, glycerin and 10% ethylparaben solution were weighed at a weight ratio of 1:1.2:0.8:0.01. Glycerin, purified water and 10% ethylparaben solution were sequentially added into a glue melting tank and heated to 70° C. Then gelatin was added and constantly stirred under vacuum until the gelatin was completely dissolved. The glue was filtered and stored at 60° C. for use.

Drug liquid formulation: Formulated amount of Coix seed oil and vitamin E were added into an ingredient tank and stirred constantly until thoroughly mixed.

Capsule pressing: Proper pellet dies were chosen according to the capsule size. Capsules were pressed under a temperature of 18° C. and a relative humidity of less than 35%, then shaped and dried. After excluding capsules of abnormal size, normal capsules were washed with 95% medicinal ethanol and dried continuously till the moisture content was less than 12%. Unqualified capsules were removed by visual inspection, and the final products were printed and packaged.

Example 22 Preparation of Coix Seed Oil Capsule of the Invention

Formulation:

Coix seed oil 800 g Tween 80 0.60 g to give 1000 capsules

wherein, the Coix seed oil contains following triglyceride ingredients:

Trilinolein 6.69% 1-Olein-2,3-dilinolein 17.88% 1-Palmitin-2,3-dilinolein 7.21% 1,3-Diolein-2-linolein 14.92% 1-Palmitin-2-linolein-3-olein 11.55% 1,3-Dipalmitin-2-linolein 3.14% Triolein 19.86% 1-Palmitin-2,3-diolein 11.08% 1-olein-2-linolein-3-stearin 1.50% 1,3-dipalmitin-2-olein 1.70% 1,2-diolein-3-stearin 1.43% Process:

Glue formulation: Gelatin, purified water, glycerin and benzoic acid were weighed at a weight ratio of 1:1.2:0.8:0.01. Glycerin, purified water and benzoic acid were sequentially added into a glue melting tank and heated to 90° C. Then gelatin was added and constantly stirred under vacuum until the gelatin was completely dissolved. The glue was filtered and stored at 56° C. for use.

Drug liquid formulation: Formulated amount of Coix seed oil and Tween 80 were added into an ingredient tank and stirred constantly until thoroughly mixed.

Capsule pressing: Proper pellet dies were chosen according to the capsule size. Capsules were pressed under a temperature of 26° C. and a relative humidity of less than 35%, then shaped and dried. After excluding capsules of abnormal size, normal capsules were washed with 95% medicinal ethanol and dried continuously till the moisture content was less than 12%. Unqualified capsules were removed by visual inspection, and the final products were printed and packaged.

Example 23 Preparation of Coix Seed Oil Capsule of the Invention

Formulation:

Coix seed oil 500 g Vitamine E 0.40 g to give 1000 capsules

wherein, the Coix seed oil contains following triglyceride ingredients:

Trilinolein 6.99% 1-Olein-2,3-dilinolein 18.69% 1-Palmitin-2,3-dilinolein 7.54% 1,3-Diolein-2-linolein 19.02% 1-Palmitin-2-linolein-3-olein 14.75% 1,3-Dipalmitin-2-linolein 3.28% Triolein 15.96% 1-Palmitin-2,3-diolein 8.11% 1-olein-2-linolein-3-stearin 1.38% 1,3-dipalmitin-2-olein 1.52% 1,2-diolein-3-stearin 1.29% Process:

Glue formulation: Gelatin, purified water, glycerin and potassium sorbate were weighed at a weight ratio of 1:0.9:0.6:0.005. Glycerin, purified water and potassium sorbate were sequentially added into a glue melting tank and heated to 80° C. Then gelatin was added and constantly stirred under vacuum until the gelatin was completely dissolved. The glue was filtered and stored at 62° C. for use.

Drug liquid formulation: Formulated amount of Coix seed oil and Vitamin E were added into an ingredient tank and stirred constantly until thoroughly mixed.

Capsule pressing: Proper pellet dies were chosen according to the capsule size. Capsules were pressed under a temperature of 28° C. and a relative humidity of less than 35%, then shaped and dried. After excluding capsules of abnormal size, normal capsules were washed with 95% medicinal ethanol and dried continuously till the moisture content was less than 12%. Unqualified capsules were removed by visual inspection, and the final products were printed and packaged.

Example 24 Preparation of Coix Seed Oil Capsule of the Invention

Formulation:

Coix seed oil 600 g Tween 80 0.3 g to give 1000 capsules

wherein, the Coix seed oil contains following triglyceride ingredients:

Trilinolein 6.15% 1-Olein-2,3-dilinolein 16.31% 1-Palmitin-2,3-dilinolein 6.66% 1,3-Diolein-2-linolein 16.77% 1-Palmitin-2-linolein-3-olein 12.89% 1,3-Dipalmitin-2-linolein 2.88% Triolein 18.30% 1-Palmitin-2,3-diolein 10.18% 1-olein-2-linolein-3-stearin 1.81% 1,3-dipalmitin-2-olein 2.08% 1,2-diolein-3-stearin 1.81% Process:

Glue formulation: Gelatin, purified water, glycerin and chlorhexidine acetate were weighed at a weight ratio of 1:1.0:0.5:0.008. Glycerin, purified water and chlorhexidine acetate were sequentially added into a glue melting tank and heated to 85° C. Then gelatin was added and constantly stirred under vacuum until the gelatin was completely dissolved. The glue was filtered and stored at 56° C. for use.

Drug liquid formulation: Formulated amount of Coix seed oil and Tween 80 were added into an ingredient tank and stirred constantly until thoroughly mixed.

Capsule pressing: Proper pellet dies were chosen according to the capsule size. Capsules were pressed under a temperature of 30° C. and a relative humidity of less than 35%, then shaped and dried. After excluding capsules of abnormal size, normal capsules were washed with 95% medicinal ethanol and dried continuously till the moisture content was less than 12%. Unqualified capsules were removed by visual inspection, and the final products were printed and packaged.

Example 25 Preparation of Coix Seed Oil Injection of the Invention

Formulation:

Coix seed oil 100 g Soybean lecithin for injection 10 g Glycerin for injection 15 g Water for injection added to 1000 mL

wherein, the Coix seed oil contains following triglyceride ingredients:

Trilinolein 5.13% 1-Olein-2,3-dilinolein 14.09% 1-Palmitin-2,3-dilinolein 5.74% 1,3-Diolein-2-linolein 18.61% 1-Palmitin-2-linolein-3-olein 11.90% 1,3-Dipalmitin-2-linolein 2.88% Triolein 20.75% 1-Palmitin-2,3-diolein 11.19% 1-olein-2-linolein-3-stearin 1.92% 1,3-dipalmitin-2-olein 2.11% 1,2-diolein-3-stearin 1.84% Process:

To a formulated amount of soybean lecithin for injection was added an appropriate amount of water for injection. The mixture was dispersed with a high shear dispersing emulsifier into a dispersion without bulks or granules. Formulated amount of glycerin for injection was added. Then water for injection was added to a specified amount, and the mixture was stirred to give a water phase.

A formulated amount of Coix seed oil was weighed. The weighed oil and the water phase prepared above were heated separately to 60° C., then mixed and emulsified in a high pressure homogenizer, in which the low pressure was 7 MPa and the high pressure was 26 MPa. The homogenization was repeated for 5 times until the amount of particles below 2 μm was no less than 95% and particles above 5 μm were undetectable. If necessary, NaOH or HCl was used to adjust the pH to 6.8.

The resulting homogeneous emulsion was filtered by nitrogen pressure through a microporous filter of 3 μm or less, then filled under nitrogen, and finally sterilized and cooled to afford the injection.

Example 26 Preparation of Coix Seed Oil Injection of the Invention

Formulation:

Coix seed oil 300 g Soybean lecithin acceptable for injection 40 g Glycerin acceptable for injection 50 g Water for injection added to 1000 mL

wherein, the Coix seed oil contains following triglyceride ingredients:

Trilinolein 5.71% 1-Olein-2,3-dilinolein 15.11% 1-Palmitin-2,3-dilinolein 6.02% 1,3-Diolein-2-linolein 15.45% 1-Palmitin-2-linolein-3-olein 14.20% 1,3-Dipalmitin-2-linolein 3.20% Triolein 19.91% 1-Palmitin-2,3-diolein 9.22% 1-olein-2-linolein-3-stearin 1.78% 1,3-dipalmitin-2-olein 2.01% 1,2-diolein-3-stearin 1.70% Process:

To a formulated amount of soybean lecithin acceptable for injection was added an appropriate amount of water for injection. The mixture was dispersed with a high shear dispersing emulsifier into a dispersion without bulks or granules. Formulated amount of glycerin acceptable for injection was added. Then water for injection is added to a specified amount, and the mixture was stirred to give a water phase.

A formulated amount of Coix seed oil was weighed. The weighed oil and the water phase prepared above were heated separately to 70° C., then mixed and emulsified in a high pressure homogenizer, in which the low pressure was 11 MPa and the high pressure was 48 MPa. The homogenization was repeated for 6 times until the amount of particles below 2 μm was no less than 95% and particles above 5 μm were undetectable. If necessary, NaOH or HCl was used to adjust the pH to 7.5.

The resulting homogeneous emulsion was filtered by nitrogen pressure through a microporous filter of 3 μm or less, then filled under nitrogen, and finally sterilized and cooled to afford the injection.

Example 27 Preparation of Coix Seed Oil Injection of the Invention

Formulation:

Coix seed oil 200 g Soybean lecithin for injection 25 g Glycerin acceptable for injection 30 g Water for injection added to 1000 mL

wherein, the Coix seed oil contains following triglyceride ingredients:

Trilinolein 6.18% 1-Olein-2,3-dilinolein 16.03% 1-Palmitin-2,3-dilinolein 6.51% 1,3-Diolein-2-linolein 16.30% 1-Palmitin-2-linolein-3-olein 12.83% 1,3-Dipalmitin-2-linolein 2.81% Triolein 18.10% 1-Palmitin-2,3-diolein 9.95% 1-olein-2-linolein-3-stearin 1.71% 1,3-dipalmitin-2-olein 1.97% 1,2-diolein-3-stearin 1.69% Process:

To a formulated amount of soybean lecithin for injection was added an appropriate amount of water for injection. The mixture was dispersed with a high shear dispersing emulsifier into a dispersion without bulks or granules. Formulated amount of glycerin acceptable for injection was added. Then water for injection is added to a specified amount, and the mixture was stirred to give a water phase.

A formulated amount of Coix seed oil was weighed. The weighed oil and the water phase prepared above were heated separately to 65° C., then mixed and emulsified in a high pressure homogenizer, in which the low pressure was 8 MPa and the high pressure was 40 MPa. The homogenization was repeated for 4 times until the amount of particles below 2 μm was no less than 95% and particles above 5 μm were undetectable. If necessary, NaOH or HCl was used to adjust the pH to 6.5.

The resulting homogeneous emulsion was filtered by nitrogen pressure through a microporous filter of 3 μm or less, then filled under nitrogen, and finally sterilized and cooled to afford the injection.

Example 28 Preparation of Coix Seed Oil Capsule of the Invention

Formulation:

Coix seed oil 200 g Vitamine E 0.20 g to give 1000 capsules

wherein, the Coix seed oil contains following triglyceride ingredients:

Trilinolein 6.51% 1-Olein-2,3-dilinolein 17.26% 1-Palmitin-2,3-dilinolein 6.84% 1,3-Diolein-2-linolein 17.65% 1-Palmitin-2-linolein-3-olein 13.56% 1,3-Dipalmitin-2-linolein 3.07% Triolein 19.33% 1-Palmitin-2,3-diolein 8.69% 1-olein-2-linolein-3-stearin 1.59% 1,3-dipalmitin-2-olein 1.73% 1,2-diolein-3-stearin 1.49% Process:

Glue formulation: Gelatin, purified water, glycerin and 10% ethylparaben solution were weighed at a weight ratio of 1:1.2:0.8:0.01. Glycerin, purified water and 10% ethylparaben solution were sequentially added into a glue melting tank and heated to 70° C. Then gelatin was added and constantly stirred under vacuum until the gelatin was completely dissolved. The glue was filtered and stored at 59° C. for use.

Drug liquid formulation: Formulated amount of Coix seed oil and Vitamin E were added into an ingredient tank and stirred constantly until thoroughly mixed.

Capsule pressing: Proper pellet dies were chosen according to the capsule size. Capsules were pressed under a temperature of 16° C. and a relative humidity of less than 35%, then shaped and dried. After excluding capsules of abnormal size, normal capsules were washed with 95% medicinal ethanol and dried continuously till the moisture content was less than 12%. Unqualified capsules were removed by visual inspection, and the final products were printed and packaged.

Example 29 Preparation of Coix Seed Oil Capsule of the Invention

Formulation:

Coix seed oil 800 g Tween 80 0.60 g to give 1000 capsules

wherein, the Coix seed oil contains following triglyceride ingredients:

Trilinolein 6.71% 1-Olein-2,3-dilinolein 18.01% 1-Palmitin-2,3-dilinolein 7.25% 1,3-Diolein-2-linolein 18.50% 1-Palmitin-2-linolein-3-olein 10.95% 1,3-Dipalmitin-2-linolein 2.63% Triolein 17.14% 1-Palmitin-2,3-diolein 9.78% 1-olein-2-linolein-3-stearin 1.42% 1,3-dipalmitin-2-olein 1.60% 1,2-diolein-3-stearin 1.31% Process:

Glue formulation: Gelatin, purified water, glycerin and benzoic acid were weighed at a weight ratio of 1:1.2:0.8:0.01. Glycerin, purified water and benzoic acid were sequentially added into a glue melting tank and heated to 90° C. Then gelatin was added and constantly stirred under vacuum until the gelatin was completely dissolved. The glue was filtered and stored at 60° C. for use.

Drug liquid formulation: Formulated amount of Coix seed oil and Tween 80 were added into an ingredient tank and stirred constantly until thoroughly mixed.

Capsule pressing: Proper pellet dies were chosen according to the capsule size. Capsules were pressed under a temperature of 26° C. and a relative humidity of less than 35%, then shaped and dried. After excluding capsules of abnormal size, normal capsules were washed with 95% medicinal ethanol and dried continuously till the moisture content was less than 12%. Unqualified capsules were removed by visual inspection, and the final products were printed and packaged.

Example 30 Preparation of Coix Seed Oil Capsule of the Invention

Formulation:

Coix seed oil 500 g Vitamine E 0.40 g to give 1000 capsules

wherein, the Coix seed oil contains following triglyceride ingredients:

Trilinolein 6.85% 1-Olein-2,3-dilinolein 18.24% 1-Palmitin-2,3-dilinolein 7.25% 1,3-Diolein-2-linolein 15.01% 1-Palmitin-2-linolein-3-olein 12.03% 1,3-Dipalmitin-2-linolein 3.01% Triolein 18.60% 1-Palmitin-2,3-diolein 10.80% 1-olein-2-linolein-3-stearin 1.39% 1,3-dipalmitin-2-olein 1.53% 1,2-diolein-3-stearin 1.30% Process:

Glue formulation: Gelatin, purified water, glycerin and potassium sorbate were weighed at a weight ratio of 1:0.9:0.6:0.005. Glycerin, purified water and potassium sorbate were sequentially added into a glue melting tank and heated to 80° C. Then gelatin was added and constantly stirred under vacuum until the gelatin was completely dissolved. The glue was filtered and stored at 62° C. for use.

Drug liquid formulation: Formulated amount of Coix seed oil and Vitamin E were added into an ingredient tank and stirred constantly until thoroughly mixed.

Capsule pressing: Proper pellet dies were chosen according to the capsule size. Capsules were pressed under a temperature of 20° C. and a relative humidity of less than 35%, then shaped and dried. After excluding capsules of abnormal size, normal capsules were washed with 95% medicinal ethanol and dried continuously till the moisture content was less than 12%. Unqualified capsules were removed by visual inspection, and the final products were printed and packaged. 

What is claimed is:
 1. A Coix seed oil, comprising 11 triglyceride ingredients in the following mass percentages: trilinolein 4.87-6.99%, 1-olein-2,3-dilinolein 13.00-18.69%, 1-palmitin-2,3-dilinolein 5.25-7.54%, 1,3-diolein-2-linolein 13.23-19.02%, 1-palmitin-2-linolein-3-olein 10.26-14.75%, 1,3-dipalmitin-2-linolein 2.28-3.28%, triolein 14.44-20.76%, 1-palmitin-2,3-diolein 8.06-11.58%, 1-olein-2-linolein-3-stearin 1.37-1.97%, 1,3-dipalmitin-2-olein 1.52-2.19% and 1,2-diolein-3-stearin 1.29-1.86%, wherein said 11 triglyceride ingredients are obtained from Coix seed powder by using supercritical CO₂ extraction and refining processes including alkali-refining.
 2. The Coix seed oil of claim 1, having the following physicochemical constants based on a fatty oil detection, method; specific gravity at 20° C. 0.917-0.920, refractive index at 20° C. 1.471-1.474, acid value <0.2, iodine value 100-106, and saponification value 188-195.
 3. The Coix seed oil of claim 1, wherein said triglyceride ingredients are in the following mass percentages: trilinolein 5.47-6.69%, 1-olein-2,3-dilinolein 14.63-17.88%, 1-palmitin-2,3-dilinolein 5.90-7.21%, 1,3-diolein-2-linolein 14.88-18.19%, 1-palmitin-2-linolein-3-olein 11.55-14.11%, 1,3-dipalmitin-2-linolein 2.57-3.14%, triolein 16.25-19.86%, 1-palmitin-2,3-diolein 9.07-11.08%, 1-olein-2-linolein-3-stearin 1.54-1.88%, 1,3-dipalmitin-2-olein 1.71-2.09% and 1,2-diolein-3-stearin 1.45-1.78%.
 4. The Coix seed oil of claim 1, wherein said triglyceride ingredients are in the following mass percentages: trilinolein 5.96-6.20%, 1-olein-2,3-dilinolein 15.93-16.58%, 1-palmitin-2,3-dilinolein 6.43-6.69%, 1,3-diolein-2-linolein 16.20-16.87%, 1-palmitin-2-linolein-3-olein 12.57-13.09%, 1,3-dipalmitin-2-linolein 2.79-2.91%, triolein 17.69-18.42%, 1-palmitin-2,3-diolein 9.87-10.27%, 1-olein-2-linolein-3-stearin 1.68-1.74%, 1,3-dipalmitin-2-olein 1.86-1.94% and 1,2-diolein-3-stearin 1.58-1.65%.
 5. The Coix seed oil of claim 1, obtained by a process comprising steps of: (1) Supercritical carbon dioxide extraction: crushing Coix seeds into 20-60 mesh powder and extracting the powder by using a supercritical CO₂ extraction system which includes a CO₂ preheater, an extractor and a separation column sequentially and is heated by jacketed circulating hot water to make the extraction temperature and separation temperature to be 33-45° C. and 30-45° C. respectively, wherein liquid CO₂ is pressed at a flow rate of 2.5 kg/h·kg-7.5 kg/h·kg based on the mass of the coix seed powder into the CO₂ preheater via a high pressure pump, the mixture of the coix seed powder and the liquid CO₂ is put in the extractor in a supercritical state, an oil is extracted from coix seed powder in the extractor by the CO₂ fluid at a pressure of 19-23 Mpa; then the CO₂ fluid with this oil enters the separation column in which the pressure is controlled to 7-10 Mpa to turn the CO₂ fluid into gas state and separate this oil; the CO₂ gas out from the separation column enters sequentially into separator I and separator II, the outlet temperatures of separator I and separator II are kept at 20-50° C. and 15-35° C., respectively, and pressures in separator I and separator II are sustained at 5-7 Mpa and 4-6 Mpa, respectively; impurities including water separated therefrom are discarded; the CO₂ gas returns to liquid CO₂ for reuse through a condenser; and a continuous extraction for 2-3 h affords a crude coix seed oil; and (2) refining process comprising steps of: adding 55% petroleum ether, bp. 60° C.-90° C., based on the oil weight and 2% NaOH in an amount ranging from 36% to 56% of the oil weight into the crude coix seed oil obtained by the supercritical CO₂ extraction; after stirring the mixture for 10 min and standing for 18-24 h, removing the lower niger layer separated from the mixture; washing the upper layer left with purified water and let standing for 18-24 h; after removing the lower layer of waste water separated, washing the upper layer left again; after standing for another 40-50 h, removing the lower layer of waste water separated; demulsifying the upper layer left with acetone in an amount of 70%-90% of the oil weight; after standing for 2-4 h, removing the lower layer of waste acetone and adding 3% to 8% of activated neutral alumina by weight of crude oil into the upper layer; stirring the mixture for 30 min, then filtering off the precipitation; heating the filtrate and adding 2% to 6% of activated kaolin by weight of crude oil; stirring the mixture for 30 min at 40-50° C. and then filtering off the precipitation; concentrating the filtrate under a reduced pressure to recover residual petroleum ether and acetone, then washing again with purified water; after standing for 1-2 h, removing the lower layer of waste water and heating the upper layer and vacuum drying it in nitrogen atmosphere to obtain an oil; then adding 8 to 12% activated neutral alumina by weight of crude oil and stirring the mixture and allowing to stand at a cold place; filtering out the precipitation and sterilizing the oil via dry heating under vacuum at 160-170° C. for 1-2 h; after cooling, filtering the oil through a 0.2 μm microporous membrane; then split charging the obtained Coix seed oil in 500 mL glass infusion bottles and sealing the bottles.
 6. The Coix seed oil of claim 5, wherein said refining process comprises steps of: adding 55% petroleum ether, bp. 60° C.-90° C., based on the oil weight and 2% NaOH in an amount ranging from 36% to 56% of the oil weight into the crude coix seed oil obtained by the supercritical CO₂ extraction; after stirring the mixture for 10 min and standing for 20 h, removing the lower niger layer separated from the mixture; washing the upper layer left with purified water and letting standing for 22 h; after removing the lower layer of waste water, washing the upper layer again; after standing for another 46 h, removing the lower waste water; demulsifying the upper layer with acetone in an amount of 70%-90% by weight of the crude oil and standing for 3 h; removing the lower layer of waste acetone and adding 5% of activated neutral alumina by weight of crude oil in the upper layer; stirring the mixture for 30 min, then filtering off the precipitation; heating the filtrate, and adding 4% of activated kaolin by weight of crude oil; stirring the mixture for 30 min at 40-50° C., and then filtering off the precipitation; concentrating the filtrate under a reduced pressure to recover residual petroleum ether and acetone, then washing again with purified water; after standing for 1 h, removing the lower layer of waste water; heating the upper layer and vacuum drying it in nitrogen atmosphere to obtain an oil; then adding 10% activated neutral alumina, stirring the mixture and allowing to stand at a cold place; filtering out the precipitation and sterilizing the oil by dry heating under vacuum at 160-170° C. for 2 h; after cooling, filtering the oil through a 0.2 μm microporous membrane; then split charging the obtained Coix seed oil in 500 mL glass infusion bottles and sealing the bottles.
 7. A pharmaceutical preparation, comprising a therapeutically effective amount of the Coix seed oil of claim 1 and one or more pharmaceutically acceptable carriers, selected from pharmaceutical dilutions, excipients, fillers, emulsifiers, binders, lubricants, absorption accelerators, surfactants, disintegrants and antioxidants.
 8. The pharmaceutical preparation of claim 7, further comprising flavoring agents, sweeteners, preservatives and/or coloring agents.
 9. The pharmaceutical preparation of claim 7, wherein said pharmaceutically acceptable carriers are selected from one or more in the group consisting of: mannitol, sorbitol, sodium metabisulfite, sodium bisulfite, sodium thiosulfate, cysteine hydrochloride, thioglycolic acid, methionine, soybean lecithin, vitamin C, vitamin E, EDTA disodium, EDTA calcium sodium, a monovalent alkali metal carbonate, acetate, phosphate or its aqueous solution, hydrochloric acid, acetic acid, sulfuric acid, phosphoric acid, amino acids, sodium chloride, potassium chloride, sodium lactate, ethylparaben solution, benzoic acid, potassium sorbate, chlorhexidine acetate, xylitol, maltose, glucose, fructose, dextran, glycine, starch, sucrose, lactose, mannitol, silicic derivatives, cellulose and its derivatives, alginates, gelatin, polyvinyl pyrrolidone, glycerin, Tween 80, agar-agar, calcium carbonate, calcium bicarbonate, surfactant, polyethylene glycol, cyclodextrin, β-cyclodextrin, phospholipid material, kaolin, talc, and calcium stearate or magnesium stearate.
 10. The pharmaceutical preparation of claim 7, wherein said pharmaceutical preparation is an oral solid preparation selected from any one of capsules, tablets, dripping pills, granules, and concentrated pills; an oral liquid preparation selected from any one of aqueous or oily suspensions, solutions, emulsions, syrups and elixirs, and a dry product that can be reconstructed by water or other suitable carrier before use; or an injection selected from any one of nano suspensions, liposomes, emulsions, lyophilized powder for injection and aqueous injection.
 11. The pharmaceutical preparation of claim 10, wherein said injection comprises the following components: Coix seed oil 50-350 g Soybean lecithin 10-40 g Glycerin 15-50 g Water added to 1000 mL.


12. The pharmaceutical preparation of claim 11, obtained by a process comprising steps of: adding appropriate amount of water to soybean lecithin; dispersing the mixture with a high shear dispersing emulsifier to give a dispersion without bulks or granules; adding glycerin; then adding water, and stirring the mixture to give a water phase; weighing Coix seed oil; heating the weighed oil and the water phase separately to 60-70° C., then mixing them and emulsifying the mixture in a high pressure homogenizer, in which the low pressure is 5-12 MPa and the high pressure is 25-50 MPa; repeating the cycle of homogenization for 3-6 times until the amount of particles below 2 μm is no less than 95% and particles above 5 μm are undetectable; using NaOH or HCl to adjust the pH value within a range from 4.8 to 8.5; and filtering the resulting homogeneous emulsion by nitrogen pressure through a microporous filter of 3 μm or less; filling the emulsion with nitrogen, sterilizing and cooling to afford the injection.
 13. The pharmaceutical preparation of claim 12, wherein the pH value is adjusted within a range from 6.8 to 7.0.
 14. The pharmaceutical preparation of claim 12, wherein the pH value is adjusted to 6.8.
 15. The pharmaceutical preparation of claim 10, wherein said capsule comprises the following components: Coix seed oil 200-800 g Antioxidant(s) and/or emulsifier(s) 0.20-0.60 g to give 1000 capsules


16. The pharmaceutical preparation of claim 15, obtained by a process comprising steps of: preparing glue solution: weighing gelatin, purified water, glycerin and a preservative at a weight ratio of 1:0.6-1.2:0.3-0.8:0.0001-0.01; adding glycerin, purified water and preservative sequentially into a glue melting tank; heating to 70° C.-90° C.; then adding gelatin and constantly stirring the mixture under vacuum until the gelatin is completely dissolved; filtering the glue solution and storing the filtered glue solution at 56-62° C. for use; preparing drug liquid: adding Coix seed oil, antioxidant(s) and/or emulsifier(s) into a dosing tank, and stirring the mixture constantly until being homogeneously mixed; and pressing capsules: choosing proper pellet dies according to the capsule size; pressing capsules in a temperature of 15-30° C. and a relative humidity of less than 35%; drying the pressed and shaped capsules; after removing capsules of abnormal size, washing the normal capsules with 95% medicinal ethanol, and drying them continuously till the moisture content is less than 12%; visually inspecting and removing unqualified capsules, then packaging to afford the pharmaceutical preparation.
 17. The pharmaceutical preparation of claim 16, wherein, said preservative is selected from any one of 10% ethylparaben solution, benzoic acid, potassium sorbate and chlorhexidine acetate; said antioxidant is vitamin E; and said emulsifier is Tween
 80. 18. The Coix seed oil of claim 1, for use in the preparation of antitumor drugs for treatment of tumors selected from a group consisting of lung cancer, liver cancer, pancreatic cancer, prostate cancer, ovarian cancer and breast cancer, in early, middle or late stage. 